138546794 has 4 divisors (see below), whose sum is σ = 207820194. Its totient is φ = 69273396.

The previous prime is 138546791. The next prime is 138546827. The reversal of 138546794 is 497645831.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 497645831 = 547 ⋅909773.

It can be written as a sum of positive squares in only one way, i.e., 95316169 + 43230625 = 9763^2 + 6575^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (138546791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34636697 + ... + 34636700.

Almost surely, 2^138546794 is an apocalyptic number.

138546794 is a deficient number, since it is larger than the sum of its proper divisors (69273400).

138546794 is an equidigital number, since it uses as much as digits as its factorization.

138546794 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69273399.

The product of its digits is 725760, while the sum is 47.

The square root of 138546794 is about 11770.5902145984. The cubic root of 138546794 is about 517.4465474130.

The spelling of 138546794 in words is "one hundred thirty-eight million, five hundred forty-six thousand, seven hundred ninety-four".